Megan Reitz is Professor of Leadership and Dialogue at Hult International Business School where she speaks, researches, consults and supervises on the intersection of leadership, change, dialogue and mindfulness. She is on the Thinkers50 ranking of global business thinkers and is ranked in HR Magazine’s Most Influential Thinkers listing. She has written Dialogue in Organizations and Mind Time and her most recent book, with Financial Times Publishing, is called Speak Up which was shortlisted for the CMI Management Book of the Year 2020.     She is a regular contributor to Harvard Business Review and her research has recently featured in Forbes, on the BBC, in two TEDx talks, on the Brene Brown podcast ‘Dare to Lead’ and in numerous academic and practice-based journals. Her latest research on employee activism was nominated for the Thinkers50 Breakthrough Idea Award 2021 and her TED talk on the topic has been viewed more than a million times.    Examples of her work and contact details can be found at www.meganreitz.com and on twitter @MeganReitz1.    John Higgins is a highly regarded and respected coach, speaker and researcher operating across the globe with clients, research partners and personal connections at all levels of organisational and political life. His reputation is based around having a distinctive contribution to make around what it takes to create and sustain speak-up cultures, in the face of an ever-evolving social and environmental milieu, particularly in this age of workplace activism. He has been widely published in many high-profile journals including the Harvard Business Review, the Sloan Management Review, the British Medical Journal and the European Business Review. He is the trusted thinking and speaking partner of a wide range of elite organisational consultancies.    Alongside his journal and popular publications, he has written and researched extensively alongside the highly innovative Ashridge Doctorate and Masters in Organizational Change. Combined with his work as a leadership tutor and active challenger of organizational and leadership norms he has published numerous academically and theoretically rigorous books including: The Change Doctors – reimagining organizational practice (with Dr Kathleen King), Leadership Unravelled – the faulty thinking behind modern management (with Dr Mark Cole) and most recently The Great Unheard at Work – Understanding voice and silence in organisations (also with Dr Mark Cole).     More details on his work can be found at www.johnhigginsresearch.com.